Craig McQueen <[email protected]> added the comment:
Just for the record... here is a relevant use case...
I'm working on some code for calculating CRCs, and hope to support any CRC
width, including CRC-5. This involves, among the calculations:
crc >> (crc_width - 8)
The complete expression is:
crc = table[((crc >> (crc_width - 8)) ^ data_byte) & 0xFF] ^ (crc << 8)
where crc_width is typically 32 or 16, but in the case of CRC-5 would be 5.
I think the calculation would work fine for all cases, if only Python allowed
me to right-shift with a negative number. But now I'll have to handle the two
cases separately.
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nosy: +cmcqueen1975
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<http://bugs.python.org/issue1205239>
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